Remove slash from packageName argument

Chocolatey v0.9.8.20 on Windows 7 gives me this error when installing easy.install:

[ERROR] Exception calling ".ctor" with "2" argument(s): "Could not find a part of the path 'C:\Users\Ph\AppData\Local\Temp\chocolatey\easy.install\setuptools\easy.install\setuptoolsInstall.exe'."

If I hack the install script like this, it will install successfully (but I don't know if that's really the right fix...).  Also, perhaps this is some edge case of my machine's setup, I haven't invested time into reproducing it elsewhere.